Optical waveguides – Optical waveguide sensor – Including physical deformation or movement of waveguide
Reexamination Certificate
2007-07-24
2010-06-01
Kim, Ellen (Department: 2874)
Optical waveguides
Optical waveguide sensor
Including physical deformation or movement of waveguide
C356S051000, C356S073000, C385S037000
Reexamination Certificate
active
07729566
ABSTRACT:
A method of sensing a process utilizing a sensing apparatus consisting of more than one diode laser having select lasing frequencies, a multiplexer optically coupled to the outputs of the diode lasers with the multiplexer being further optically coupled to a pitch side optical fiber. Multiplexed laser light is transmitted through the pitch side optical fiber to a pitch optic operatively associated with a process chamber which may be a combustion chamber or the boiler of a coal or gas fired power plant. The pitch optic is oriented to project multiplexed laser output through the process chamber. Also operatively oriented with the process chamber is a catch optic in optical communication with the pitch optic to receive the multiplexed laser output projected through the process chamber. The catch optic is optically coupled to an optical fiber which transmits the multiplexed laser output to a demultiplexer. The demultiplexer demultiplexes the laser light and optically couples the select lasing frequencies of light to a detector with the detector being sensitive to one of the select lasing frequencies.
REFERENCES:
patent: 4360372 (1982-11-01), Maciejko
patent: 4895421 (1990-01-01), Kim et al.
patent: 4915468 (1990-04-01), Kim et al.
patent: 4989979 (1991-02-01), Buckman
patent: 5042905 (1991-08-01), Anjan et al.
patent: 5396506 (1995-03-01), Ball
patent: 5448071 (1995-09-01), McCaul et al.
patent: 5477323 (1995-12-01), Andrews et al.
patent: 5506721 (1996-04-01), Hikami et al.
patent: 5621213 (1997-04-01), Barshad
patent: 5798840 (1998-08-01), Beiting
patent: 5802222 (1998-09-01), Rasch et al.
patent: 5813767 (1998-09-01), Calabro et al.
patent: 5960129 (1999-09-01), Kleinschmitt
patent: 6016372 (2000-01-01), Fein et al.
patent: 6150661 (2000-11-01), McCaul et al.
patent: 6160255 (2000-12-01), Sausa
patent: 6169830 (2001-01-01), Kewitsch
patent: 6345134 (2002-02-01), Laming et al.
patent: 6363190 (2002-03-01), Chen
patent: 6455851 (2002-09-01), Lord et al.
patent: 6519385 (2003-02-01), Green
patent: 6593573 (2003-07-01), McCann et al.
patent: 6766070 (2004-07-01), Williams et al.
patent: 6791689 (2004-09-01), Weckstrom
patent: 2002/0031737 (2002-03-01), Von Drasek et al.
patent: 2002/0158202 (2002-10-01), Webber et al.
patent: 2002/0181856 (2002-12-01), Sappey et al.
patent: 2003/0026541 (2003-02-01), Sappey et al.
patent: 2004/0101305 (2004-05-01), Jung et al.
patent: 2008/0002186 (2008-01-01), Masterson et al.
patent: 1343873 (2002-04-01), None
patent: 766080 (1997-02-01), None
patent: 409152126 (1997-06-01), None
patent: 2000-074830 (2000-03-01), None
Allen (1998) “Diode laser absorption sensors for gas-dynamic and combustion flows” Measuring Science and Technology 9:545.
Allen et al. (2002) Tunable Diode Laser Sensing and Combustion Control inApplied Combustion Diagnostics, chapter 18.
Baer, et al. (1994) “Multiplexed Diode-Laser Sensor System for Simultaneous H20, 02, and Temperature Measurements” Optics Letters vol. 19, No. 22, pp. 1900-1902, Nov. 15, 1994.
Docquier and Candel (2002) “Combustion control and sensors: a review” Progress in Energy and Combustion Science 28, 107-150.
Ebert et al. (1998) “Simultaneous Laser-Based in situ Detection of Oxygen and Water in a Waste Incinerator for Active Combustion Control Purposes” 27thSymposium on Combustion pp. 1301-1308.
Ebert et al. (2000) “Simultaneous Diode-Laser-Based in situ Detection of Multiple Species and Temperature in a Gas-Fired Power Plant” Proceedings of the Combustion Institute 28:423.
Ebert et al. (2000)The Use of Lasers as the Basis for Combustion Equipment Controlat TOTem, Intelligent Combustion Control pp. 1-15.
Furlong et al. (1998) “Real-Time Adaptive Combustion Control Using Diode-Laser Absorption Sensors” 27thSymposium on Combustion pp. 103-111.
Furlong, et al. (1998) Diode Laser Sensors for Real-Time Control of Pulsed Combustion Systems: AIAA/SAE/ASME/ASEE Joint Propulsion Conference and Exhibit, pp. 1-8, XP001148178, Jul. 13, 1998.
Liu et al. (2003) 39thAIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Paper No. AIAA-2003-4581 pp. 1-6.
Miller et al. (1996) “Diode laser-based air mass flux sensor for subsonic aeropropulsion inlets” Applied Optics 35:4905.
Ouyang, et al. (1992) “Tomographic Absorption Spectroscopy of Combustion Gases Using Tunable Infrared Diode Lasers” Paper No. 1637-20, SPIE Conference on Environmental and Process Monitoring Technologies, pp. 163-172.
Phillippe et al. (1993) “Laser diode wavelength-modulation spectroscopy for simultaneous measurement of temperature, pressure, and velocity in shock-heated oxygen flows” Applied Optics 32:6090.
Sanders et al. (2000) “Diode-Laser Sensor for Monitoring Multiple Combustion Parameters in Pulse Detonation Engines” Proceedings of the Combustion Institute 28:587.
Sanders et al. (2001) “Diode-laser absorption sensor for line-of-sight gas temperature distributions” Applied Optics 40:4404.
Teichert et al. (2003) “Simultaneous in situ measurement of CO, H2O, and gas temperatures in a full-sized coal-fired power plant by near-infrared diode lasers” Applied Optics 42:2043.
Upschulte et al. (1999) “Measurements of CO, CO2, OH, and H2O in room-temperature and combustion gases by use of a broadly current-tuned multisection InGaAsP diode laser” Allied Optics 38:1506.
Varghese, et al. (1997) “Temperature and CO2 Concentration Profiles in Flames Measured by Laser Absorption Tomography” Paper 97/0317, AIAA 35thAerospace Sciences Meeting, Reno, NV, Jan. 1997.
Villarreal, et al. (2005) “Frequency Resolved Absorption Tomography with Tunable Diode Lasers” Applied Optics 44, pp. 6786-6795.
Webber et al. (2000) “In Situ Combustion Measurements of CO, CO2, H2O and Temperature Using Diode Laser Absorption Sensors” Proceedings of the Combustion Institute 28:407.
Wolfrum (1998) “Lasers in Combustion: From Basic Theory to Practical Devices” 27thSymposium on Combustion pp. 1-41.
Patent Abstracts of Japan, retrieved Aug. 8, 2008 from the Internet at URL http://www19.ipdl.inpit.go.jp/PA1/result/detail/main/wAAADta08RDA412074830.
Translation of portions of “Notice of Reasons for Rejection,” mailed Aug. 5, 2008 by the Japan Patent Office prepared for Japan Patent Application No. 2006-509589, 4 pages.
Hofvander Henrik
Howell James
Masterson Bernard Patrick
Sappey Andrew D.
Kim Ellen
Swanson & Bratschun L.L.C.
Zolo Technologies, Inc.
LandOfFree
Method for the monitoring and control of a process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the monitoring and control of a process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the monitoring and control of a process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4159172